ition.
--The Oerlikon works.--A very exhaustive exhibition of
electric apparatus described and illustrated.--12
illustrations. 11356

Magnetism in its Relation to Induced Electromotive Force
and Current.--By ELIHU THOMSON.--A most impressive paper,
bringing the obscure laws of magnetic induction within the
understanding of all without the application of
mathematics.--12 illustrations. 11354

The Ader Flourish of Trumpets.--One of the curiosities in
telephony from the Paris exhibition, by which sounds are
transmitted to a large audience.--4 illustrations. 11358

The Electric Motor Tests on the New York Elevated
Railroad.--Abstracts of tests which were recently made of
the Daft motor on the elevated railroad of this city. 11353

V. ETHNOLOGY.--Ancient Lake Dwellings.--Interesting abstract
of what is known about lake dwellings, the history of
their construction, and the "finds" made on the sites by
archaeologists. 11363

VI. FORESTRY.--Succession of Forest Growths.--A valuable paper
on forestry, treating of the evils done by man and a plea
for the necessity of intelligent treatment of our woods. 11362

VII. HYGIENE AND MEDICINE.--Acetic Acid as a Disinfectant.--Use
of acetic acid in septic medical cases as a substitute
for carbolic acid and bichloride of mercury. 11365

Counter-Irritation in Whooping Cough.--By G.F. INGLOTT,
M.D.--Application of irritants to the skin for curing the
paroxysms of whooping cough. 11365

On the Health Value to Man of the So-called Divinely
Beneficent Gift, Tobacco.--By J.M.W. KITCHEN, M.D.--The
evils to man and to the soil.--A formidable series of
accusations well expressed. 11365

Water as a Therapeutical Agent.--By F.C. ROBINSON,
M.D.--An interesting resume of different applications of
water in therapeutics.--Suggestions of use for all
households. 11364

VIII. MILITARY ENGINEERING.--Gibraltar.--A history of this
important strategic position and of the different sieges
the fortress has undergone. 1